Clamshell bucket



May 16, 1933.

w. A. OLSON 1,909,867

CLAMSHELL BUCKET 4 Sheets-Sheet l Filed Dc. 20, 1932 Inventor liomey May 16, 1933. w. A. OLSON 1,909,857

CLAMSHELL BUCKET Filed Dec. 20, 1952 4 Sheets-Sheet 2 /I Home y May 16, 1933. w. A. OLSON CLAMSHELL BUCKET Filed Dec. 20, 1952 4 Sheets-Sheet 3 Inuen tor mlklmzzfl 026022 May 16, 1933. w. A. OLSON 1,909,367

CLAMSHELL BUCKET Filed De c. 20. 1932 4 Sheets-Sheet 4 I Invenlor mzizfaani 0&5'012 flitormey Patented May 16, 1933 WILLIAM A. otson, or rAcIrIc, urssonar cLAMsHELL BUCKET Application filed December 20, 1932. Serial No. 648,111.

This invention relates to improvements in clam shell buckets, the general object of the invention being to provide means whereby I the bucket can be easily and quickly opened and closed and whereby the weight of the bucket is used to open it and means whereby the bucket can be closed at different speeds by different arrangements of the closing cable on the pulleys or sheaves.

19 This invention also consists in certain other features of construction and in the combination and arrangement of the several parts to be hereinafter fully described illustrated in the accompanying drawings and specifically pointed out in the appended claims.

In describing the invention in detail, ref erence will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is an elevation of the improved bucket showing the bucket in closed position in full lines and in open position in dotted lines.

Fig. 2 is a vertical sectional view through Fig. 1.

Fig. 3 is a vertical sectional View through Fig. 2.

Fig. 4C is a section on line 4-4 of Fig. 2

39 looking in the direction of the arrows.

Fig. 5 is a section on line 55 of Fig. 2 looking in the direction of the arrows.

Fig. 6 is a section on line 66 of Fig. 2.

Fig. 7 is a View of one of the lower pulley supporting members.

Fig. 8 is a detail view showing the upper part of one of the frame members.

Fig. 9 is a detail view showing how a cable anchor is attached to a supporting bar.

In these drawings, the letter A indicates the bucket which is composed of the sections 1 and 2 and a pair of upwardly extending members 3 have their lower ends connected to the top part of each section as shown at 4.

A long bolt 5 passes through the intermediate tions of the bucket aremoved to closed part of the two pairs of members 3 with said members of one pair crossing diagonally the members of the otherpair as shown.

' A pair of sheaves or pulleys 7 and 8 are rotatably'arranged on the bolt 5 and are held in the osition shown in Fig. 3 by the spacers 9. n inwardly extending arm 10 is fastened to the upper end of each of the members 3 and is connected by a brace 11 with another part of each member 3. A bolt 12 passes through the arms and braces of each pair of members 3 and supports a pair of pulleys 13 which are held in the position shown inFig. 3 by the spacers 14. 1 Cable anchors 15 are also placed on the 50 bolts one at each side of the pair of pulleys and each pair of pulleys is provided with an arcuate-shaped cable guide 16. Each of the pulleys 7 and 8 is provided with a cable guide 17 and a pulley 18 has its shaft 19 sup- J ported between the members 3 of each pair of members by the brackets20 having their bent outer ends connected with thelower ends of the members 3 and their inner ends bent. upwardly and perforated as shown at 21 to receive the ends of the shaft 19.

Each pulley 18 is also provided with a cable gulde 22. A cable 2 3 has one end attached to one of the'anchors 15 with the cable passing over one of the pulleys 13. of one set K 7 and then under a pulley. 13 of "theother'set and leads to suitable controlmeans so that when this cable is pulled upon the two sec- P S tion as shownin Fig. 1. .Y I 1 If the closing action of thejbucket is to be changed, the cable 23 can .be passed around the other pulley 13 of the two sets. A cable 24- is connected to an anchor 25 [carried by one of the bolts 12 and said cable passes downwardly over a pulley 18 on the section2 and then passes upwardly over the pulley Sand has itsupper end connected to a cross piece 26. attached to a control member 27. An-

other cable 28 is attached to an anchor 29.

connected with the other bolt 12 and passes downwardly and under the pulley 22 of the section 1 and then upwardly over the pulley 7 and the upper end of this cable 8 is attached to the cross piece 26.

Thus by raising the member 27 to raise the cross piece, both cables 24 and 28 will be pulled upon and thus the two sections 1 and 2 of the bucket will be swung to open position. The cable guides will prevent the cables from jumping off the pulleys or sheaves and brackets 29 can be attached to all four corners of the bucket for the tag lines.

As will be seen, all working parts are "on WILLIAM A. OLSON.

top of the bucket and there are no corner 7,

working parts which eliminates wear on bucket corners, and by providing large pul leys or sheaves, cable wear is reduced to a minimum.

It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction and in the combination and arrangement ofthe several parts provided that such changes fall within the scope'of the appended claims.

Having thus described my invention, what I claim as new is i 1. In a clam bucket of the class described composed of two sections, upright members crossing each other and arranged in pairs,

one pair being connected to the top part of one section and the other pair to the top part of the other section, a pivotal member passing through the members where they cross each other, inwardly extending parts at the upper ends of the two sets of members, shafts passing through said inwardly extending members, pulleys carried by the shafts, a

cable connected to one inwardly extending member and passing over certain pulleys of the two sets for closing the sections of the bucket, pulleys connected with the upper portions of the two sections, pulleys carried by the centrally arranged pivotal member, cables passing over the last-mentioned pulleys and under the pulleys carried by the sections and having their upper ends connected with the inwardly extending portions of the tops of the upwardly extending members.

2. In a clam bucket of the class described composed of two sections, upright. members crossing each other and arranged in pairs, Onepairbeing connected to the top part of one section and the other pair to the top part of the other section, a'pivotal member passing through the members where they cross each other, inwardly extending parts at the upper ends of the two sets of members, shafts passing through said inwardlyextending members, pulleys carried by the shafts, a

cable connected to one inwardly extending member and passing over certain pulleys of 

